I have a Tamron AF75-300mm F/4-5.6 LD Macro(1:3.9) lense and would like to know if this lense is suitable for the EOS 400D camera? I original used this lense on a EOS 300 analogue camera and since sold it but kept the Tamron lense. I was told by Canon Australia that it would fit the 300D. So if that's so will it fit 400D?.

I have since read that these lenses are not suitable for the new range of digital cameras, is this correct?

If I intend buying the 400D is this lense worth keeping for the 400D or sell it and get a new lense with anti-dust system?

"This extended-range zoom offers true telephoto capability ideal for a variety of applications including sports and wildlife shooting. The lens also features the capability to provide beautifully blurred background to high light the main subject in portraiture, or"compression effects" that make the most of the telephoto lens."

the lenses work both on film cameras and digital cameras as long as they fit if the tamron has a canon mount (EF) then there shouldn't be no worry!